Welcome to fastd’s documentation!

User manual

• Command line options
• Configuration file format
  • Main configuration
  • Peer configuration
• Encryption & authentication methods
  • Recommended methods
  • List of methods
• MTU configuration
  • Guidelines
  • Examples

Release notes

• fastd v22
  • New features
  • Bugfixes
  • Other changes
• fastd v21
  • Bugfixes
• fastd v20
  • New features
  • Bugfixes
  • Other changes
• fastd v19
  • New features
  • Removed features
  • Bugfixes
  • Other changes
• fastd v18
  • New features
  • Bugfixes
  • Other changes
• fastd v17
  • New features
  • Bugfixes
  • Other changes
• fastd v16
  • Bugfixes
  • Other changes
• fastd v15
  • New features
  • Bugfixes
  • Other changes

Cryptographic algorithms

• ec25519
  • Twisted Edwards curves
  • The curve used by ec25519
  • Implementation
  • Bibliography
• FHMQV-C
  • Protocol specification
  • Usage in fastd
  • Bibliography
• Ciphers
  • AES128-CTR
  • Salsa20(/12)
  • Bibliography
• Message Authentication Codes
  • GHASH / Galois/Counter Mode (GCM) / GMAC
  • UHASH / UMAC
  • Bibliography
• Method providers
  • generic-gmac
  • composed-gmac
  • generic-umac
  • composed-umac
  • generic-poly1305
  • null-l2tp
  • null
  • cipher-test

Developer documentation

• Building fastd
  • Dependencies
  • Building
  • Build settings
• Protocol specification
  • Basic protocol design
  • L2TP control message headers
  • Handshake format
  • Payload packets